While at Shirley's Bay he worked on a number of projects. One of the projects he directed was the ground-breaking Canadian satellite called Alouette. The DRTE having no experience developing satellites had to work quite hard to think of and counter all the difficulties they would face in the harsh environment of space. Because of his work on Alouette he was promoted to chairman of government study group to study the upper atmosphere and space programs in Canada.

While chairman, he compiled his findings into "The Chapman Report" in which he argued that Canada needed to redirect its space program in order to continue its ongoing research more effectively and efficiently. "The Chapman Report" remains an important document in helping the Canadian Space Agency choose what they should work on when it comes to space programs.

Chapman was given awards for his work in aero-space technology. The first was given by the Royal Society of Canada in 1966; he also received an Engineering medal from the Association of Professional Engineers of Ontario and the Dillinger Gold Medal from the International Union of Radio Scientists the same year. In 1967 Chapman was awarded with The Chree Medal and Prize and the McCurdy award from the Canadian Aeronautics and Space Institution.

After his death in the year 1979, the Canadian Space Agency was formed to organize and give Canada its own space agency to create a central place to meet and work on Canadian space projects. With this new organization Canada has been able to construct and launch new projects into orbit. One of the most important Canadian projects is Canadarm which has become used frequently on the International Space Station (or ISS for short).